Measuring apparatus and instruments for measuring surface potential, namely, zeta potential, size and size distribution of colloidal particles in a solution; measuring and testing machines and instruments, in the nature of spectrophotometers, particle size analyzers, zeta potential analyzers

'analyz':35,38 'apparatus':2 'colloid':17 'distribut':15 'instrument':4,27 'machin':25 'measur':1,6,22 'name':9 'natur':30 'particl':18,33 'potenti':8,11,37 'size':12,14,34 'solut':21 'spectrophotomet':32 'surfac':7 'test':24 'zeta':10,36

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